Rolex
Datejust 31 178159-0070— lug 16mm

The lug width of the Rolex Datejust 31 178159-0070 is 16 millimetres. This dimension corresponds to the distance between the two lugs that attach the strap to the case. It is essential to verify this measurement before purchasing an aftermarket strap to ensure proper mechanical compatibility and aesthetic fit.

For a white gold Datejust 31, alligator leather represents the most formal and refined choice, enhancing the luminosity of the case. Calf leather offers elegance with understated character and develops a natural patina over time. For a more versatile, sporty aesthetic, rubber or vegetable-tanned leather straps are excellent options that create interesting visual contrasts.

The strap is changed by removing the spring bars that connect the strap to the case lugs. This requires a specialised tool (spring bar tool) and careful handling to avoid damage to the case. Professional assistance is recommended; Casati Milano offers fitting and customisation services at its Milan atelier by appointment.

Yes, you can use aftermarket straps compatible with a 16mm lug width on this model. Milano Straps offers an extensive selection of handcrafted straps in alligator, calf, rubber and other materials, specifically designed for this width. An 18-month warranty on manufacturing defects ensures professional quality comparable to Rolex standards.

A high-quality leather strap, made with vegetable tanning or alligator leather, typically lasts 3–5 years with daily wear, depending on exposure to moisture, sunlight and intensity of use. Natural leather tends to dry and crack over time; periodic maintenance and preventive strap replacement keep the watch in optimal condition. Milano Straps' handcrafted straps are engineered to maximise both longevity and patina development.